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Linear Variable Filter

Linear variable filters combine short and long wave pass filters into one convenient device to simplify measurement processes and reduce costs. Each filter changes in thickness along a linear path. Moving the filter affects the spectral response and allows different frequencies to pass through it. As a result, linear variable filters offer incredible versatility in numerous applications.

Linear Variable Filter – Black

We have linear variable filter options for visible (VIS) or 400-700 nm, near-infrared (NIR) or 550-1,000nm, and ultraviolet (UV) or 300-400nm light. Purchase linear variable filters for affordable rates and comprehensive by-application customization options.

Features and Benefits of the Filter

Linear variable filters contain fused silica substrates with a coating to filter either VIS, NIR, or UV light. The result is a series of durable filters that permit minimal autofluorescence.

The filters gradually become thicker along the gradient axis. The difference in thickness shapes the filter’s light transmission to specify particular frequencies along the filter’s compatible range:

  • VIS filters can transmit wavelengths between 400 and 700nm.
  • NIR filters can transmit wavelengths between 550 and 1,000nm.
  • UV filters can transmit wavelengths between 300 and 400nm.

Our linear variable filters are durable and versatile, with durable materials and broad filtering capabilities. We design each filter to provide the most vital light transmission while setting a robust block against undesired frequencies. As a result, our filters enable greater measurement precision for accurate calculations and analysis. In addition, a single filter will fulfill your needs within its frequency range, saving you time and money purchasing multiple filters and swapping between them for different applications.

As some of the most versatile bandpass filters, linear optical filters are helpful in numerous industries. For example, any laboratory performing spectroscopy or hyperspectral imaging processes can improve efficiency by using a single filter for multiple observation subjects. Typical applications include material identification, gas analysis, hyperspectral imaging, and wavelength sensing.

Purchase a linear optical filter to access a single solution for any measurement that requires a specific wavelength, frequency range, or excitement energy. Our linear variable filters are ideal for the following:

  • Analytical chemistry.
  • Medicine.
  • Biochemistry.
  • Forensics.
  • Geology.
  • Astronomy.
  • Engineering.
  • Food processing